Improvement in soap compositions



UNITED STATES PATENT OFFICE.

WILLIAM V. WALLACE, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN SOAP COMPOSITIONS.

Specification forming part of Letters Patent No. 196,402, dated October23, 1877; pplication filed January 1.7, 1877.

To all whom it may concern:

Be it known that I, Wu. V. WVALLAOE, of the city of Boston, county ofSuffolk, and State of Massachusetts, have invented a new and usefulImprovement in Hard Soap, which improvement is fully set forth in thefollowing specification.

The object of my invention is to produce an improved hard soap ofincreased cleansing properties, and at a less cost than that of ordinaryhard soap.

To this end I have compounded a new soap which I now proceed to explain,and point out, in my claim.

The cleansing and bleaching qualities of crude carbonate of soda arewell known. Its causticity softens and loosens dirt, grease, &c., whilethe sulphate properties are a superior bleacher.

Soap-makers, by the use of lime, obtain its caustic parts, and discardthe residue, which is equal, on an average, to one-half of its bulk. Bymy process I incorporate powdered crude carbonate of soda-z. 0., sodaash of commerce-into the.bodyof the soap, and partly neutralize its toogreat causticity by the addition of Glaubers salts, and hold it in afirm body by a considerable proportion of resin, which should be freedfrom tiupentine.

By adding soda-ash to ordinary soap, the thereby increased causticitytends to destroy the body of the soap, as well as to make the skin smartand burn in its use.

I overcome these obstacles by cooling it, so to say, with Glauberssalts, without deteriorating its'cleansing powers, and building a toughbody with resin, which is hardened by the carbonate parts of the ash,thus producing a superior soap for ordinary uses at a reduced cost.

To make my soap I proceed in the usual manner when making a mixed tallowand resin soap, and when the latter is ready to pour into the forms Icontinue the fire, adding soda-ash and Glaubers salts, in suchproportions as are desired; or take, say, one hun dred pounds of commonyellow soap, of about twenty-five per cent. resin, fifty pounds oftially as described.

WM. V. WALLACE. Witnesses:

B. '1. STANDIsH, W. J. DRAPER.

